Take-up controlling means for embroidering-machines.



R. ZAHN. TAKE-UP CONTROLLING MEANS FOR EMBROIDERING MACHINES.

APPLICATION FILED JUNE 17, 1912.

Patented Jan. 27, 1914.

UIT

an: srarns ROBERT ZAHN, OF

ATE

PLAUE N, GERMANY.

To all who 17bit may concern:

Be it known that I, ROBERT ZAHN, a subject of the German Emperor, residing at Pla'uen, Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Take-Up Controlling Means for Embroidering-h/Iachines, of which the following is a specification.

The present invention relates to embroidering machines having apparatus for making button hole edge stitches, known as festoon apparatus, and more'particularly, to means for imparting positive motion to the take up levers.

In embroidering machines with festoon apparatus, the take up motion for festooning differs from that of ordinary embroidering. It is well known that hitherto when the mechanism for operating the take up levers comprises separate cams and levers, it has been impossible to change from festooning to ordinary embroidering and vice versa without removing the corresponding levers from their respective cams.

It is the object of the present invention to provide an apparatus whereby the change from festooning to ordinary embroidering and vice versa can be effected while the engagement of the levers with the cams is constantly maintained.

My invention is diagrammatically illustrated in the accompanying drawing in which similar reference characters denote corresponding parts and in which the figure is an elevation of the apparatus.

In the example illustrated the cams 2, 6 consist of disks having cam shaped grooves.

1 denotes the main shaft of the machine to which the cam 2 for ordinary embroidering is fixed. This cam constantly engages the roller 3 of a bell crank lever 4 pivotally connected to the lower end of a rod 9.

5 denotes the shaft on which the cam 6 for festooning is fixed. Constantly engaged in this cam is the roller 7 of a bell crank lever 8 pivotally connected to the lower end of a rod 10.

A reciprocating rod 15 is pivotally connected at its ends to the take up levers 25, t and at a suitable point is provided with a coupling 13. The upper ends of the. rods 9 and 10 may be formed with suitable means capable to readily engage and disengage from thesaid coupling. In the present embodiment of my invention the coupling consists of a member 13 formed integral with Specification of Letters Patent.

Application filed June 17, 1912.

Patented J an. 27, 1914.

Serial No. 704,104.

the rod 15 and which is bifurcated at both sides, as at 13, 13 and head pieces 11 and 12 formed on the upper ends of the rods 9 and 10, the bifurcated parts 13 13 being adapted to receive the heads 11 and 12 respectively, of the rods 9 and 10, so as to couple the said rods 9 and 10 to said rod 15; The rods 9 and 10 constantly engage fork shaped projections, 16, 17 provided on a transversely slidable bar 18, by the displace ment of which in one direction one of the rods 9 and 10 becomes coupled to and the other uncoupled from the rod 15 and by the displacement in the other direction the reverse takes place.

In the position shown, the take up levers z, t are adjusted for ordinary embroidering. *hen it is desired to change from this operation to festooning, the bar 18 is moved to the right whereby the rod 9 becomes uncoupled from and the rod 10 coupled to the rod 15, while the roller carrying levers 4; and S constantly remain in engagement with their respective cams 2 and 6.

lVhat I claim and desire to secure by Letters Patent is:

1. In embroidering machines, the combination with the take up members, of a cam for operating the said members for ordinary embroidering, a cam for operating the same for festooning, levers positively acted upon by said cams and means for alternately connecting said levers to the said take up members without disengaging them from their respective cams.

2. In embroidering machines, the combination with the take up members, of a cam for operating the said members for ordinary embroidering, a cam for operating the same for festooning, levers positively acted upon by said cams, a coupling means interposed between said members and means for alternately connecting the said levers with the said coupling means without disengaging them from their respective cams.

In embroidering machines, the combination with the take up members, of a cam for operating the said take up members for ordinary embroidering, a cam for operating the same for festooning, levers positively acted upon by said cams, a rod connecting said members including a coupling member and means for alternately connecting the said levers to the said coupling member without disengaging the same from their respective cams.

4. In embroidering machines, the combination with the take up members, of a cam for operating the said take up members for ordinary embroidering, a cam for operating the same for festooning, levers positively acted upon by said cams, rocking members carried by said levers and means for alternately connecting the said rocking members and the said levers to the said take up members without disengaging the said levers from their respective cams.

5. In embroidering machines, the combination with the take up members, 01": a cam for operating the said take up members for ordinary embroidering, a cam for operating the said take up members for festooning', levers positively acted upon by said cams, rocking members carried by said levers a coupling member interposed between said take up members and means for alternately connecting the rocking members and said levers to said coupling member without disengaging the said levers from their respective cams.

In testimony whereof I afiix my signature in presence of two witnesses.

ROBERT ZAHN. Witnesses:

A. CURTIS ROTH, ROBERT H. NIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

